Casper traveled from Waldmohr Pfalz Germany to Port Rotterdam in the Netherlands departing Rotterdam aboard the "Two Brothers" on July 20, 1748 and arriving in Philadelphia, PA on Sept 15, 1748 with Abraham Kieffer (brother), Johan Nicholas Kieffer (brother's son) of St. Wendel's, Saar, Abraham Kieffer Jr.(son) of Breitenbach, Johan Peter and Johan Theobald Kieffer(brother's sons) of Zweibrucken.
Ship log spelling: Casper Kiefer. Women not listed.
Caspar was listed as a communicant of the First Reformed Church (in operation 1744-1761 and was called Trinity Reformed at Hellam from 1745-1757) at Kreutz Creek, Hellam Twp., York County on 1 Jan 1754. On 24 May 1763 he was listed as a subscriber for building of the new log church.
The Old Kreutz Creek Cemetery lies east of the present Kreutz Creek Church. In it, about in the middle, on the eastern side, the first log church building was erected in 1745. Unfortunately there don't seem to be any Kieffers buried there.
He is also listed in the records of Evengelical Reformed Church, Frederick Co., MD.
He was probably born Johann Casper/Caspar Küfer and later changed his name to Kieffer.

YORK COUNTY PA., DEEDS - Page 102
191-193 14 Nov 1763 Casper Keefer of Codorus Twp. Yeoman to Ludwig Keefer. By a Proprietaries Warrant dated at Philadelphia the 9 Mar 1753 there was surveyedand laid out unto afs. Casper Keefer 2 tracts or pieces of land situated in Codrus Twp. adjoining lands of Adam Helwich, Jacob Bear and Philip Hresses the one containing 116 a. and the other containing 45 a. - And Caspar Keefer having resolved to divide my lands between my two sons, Abraham Keefer and Ludwig Keefer and my deed dated even herewith have transferred my dwelling plantation to my son Abraham and eserved out of the same what I have thought sufficient for myself and my wife during our natural lives and for my daughter Barbara now the wife of Jacob Shaffer of Codorus Twp., wheelright the sum of 45 Pds to be now the wife of Frederick Pfleger of York Twp. Blacksmith the like sum of 45 Pds to be paidby my son Abraham in full of the shares of the s. Margareta and Barbara of my land and real estate and by this instrument in writing I do intend to transfer the above described 2 tracts or pieces of land containing in the whole 161 a. to my son Ludwig which is to be in full of his share of my land or real estate. Now for the sum of 5 Shillings to me in hand paid by my said s. Ludwig Keefer of Codorus Twp. Yeoman the above 2 tracts of land containing 161 a. subject to the payment of the residue of the purchase money interestand quit rent due the proprietaries.
Caspar Keefer
Wts: Wm. Carrothers
John Boyd
On the 15 Nov 1763 before me, George Stevenson Esq. J.P. came Casper Keefer and acknowledged the above as his Act & Deed. Copy compared with the original at York 16 Nov 1763.
Geo. Stevenson, Recorder

For a history see Annette Kunselman Burgert's book - Eighteenth Century Emigrant's, vol II published by the Pennsylvania German Society, 1985- "The Western Palatinate" documents both Abraham and Casper's families on pages 197 and 198.
The German information was extracted from the Breitenbach Reformed Church book. Casper's info was extracted from Reformed KB (church book) at Waldmohr. It includes the children of both Abraham and Casper.
All of these families are recorded in the Familienbuch Breitenbach, 1663-1798, by Mr. Thomas M. Pfaff

193
York County, PA. Be it remembered that on the fifthteenth Day of Nov.1763 before me George Stevenson Esqr. one of his majesties Justices &c for said County Personally Came Casper Keefer in The within Instrument of Writing Named and acknowledged the Same to be his act and deed the intent that it may be Entered of Record Witness my hand and Seal Geo Stevenson {seal} A True Copy compared with the Origl. at York the 10th Nov. 1763.
FP Geo Stevenson Recorder
Caspar Keefer to Abraham Keefer This Indenture Made the fourteenth day of November in the fourth Year of the reign of our sovereign Lord George the third by the grace of god of Great Britain France and Ireland King Defender of the Faith &c. and in the year of our Lord God one thousand seven hundred and Sixty three Between Casper Keefer of Cordorus Township in the County of york and Province of Pennsylvania yeoman of the One part and Abraham Keefer of the same Place yeoman Oldest son of the aforesaid Caspar Keefer of the other Part Witnesseth that as well in Consideration of the sum of Ninty Pounds Lawful money of Pennsylvania to the aforesaid Caspar Keefer in hand paid by the aforesd. Abraham Keefer before the sealing and Delivery of the there as presents the receipt whereof is hereby acknowledged and of the rents Services and reservations hereinafter particularly mentioned and reserved to be paid and performed on the part of the aforesd. Abraham Keefer his heirs and assigns He the aforesd. Casper Keefer hath granted bargained sold released and Confirmed and by these presents Doth grant Bargain Sell release and Confirm unto the aforesaid Abraham Keefer and to his heirs and assigns all that Certain Improvement and tract of Land whereon the aforesd. Caspar now Dwells Situate in Cordorus Township on the forks of Codorus Creek being the same which was first Settled and Improved upon by a Certain George Swoope and by the said George Swoope Released unto the aforesaid Casper Keefer by a release under the hand and Seal of the said George Swoope duly executed bearing even Date herewith may appear With all and

194
Singular the Buildings and Improvements thereon Erected and made Woods underwoods Timber and Trees ways Waters watercourses Liberties Profits Commodities Advantages Privileges Improvements rights Members Hereditaments and appurtenances Whatsoever to the same Belonging or in any wise appertaining and Lying and being within the Bounds and Limits thereof and the reversions And commodities Rents Issues and Profits thereof and also all the Estate Right Title interest Property Claim and Demand Whatsoever of him the aforesaid Casper Keefer and his heirs of in and to the same To have and to Hold the aforesaid improvement Tract of Land and Premises hereby Granted mentioned or intended so to be and every Part thereof with the appurtenances unto the aforesaid Abraham Keefer his heirs and assigns to the only use and behoof of the said Abraham Keefer his heirs and assigns forever Subject Nevertheless to the payment of the Purchas Money Interest Quitrent and Other reservations due and to become due on the same to the Honorable the Proprietaries of the Province aforesaid their heirs and Successors. Yielding and Paying therefore and thereout unto the aforesaid Caspar Keefer & Mary Agnus his Wife on the first day of November yearly and Every year during their natural Lives Ten Cord of good sufficient Firewood to be Delivered at the door of the Present Dwelling house of the said Caspar Keefer twelve pounds of good Tallow Candles Thirty Bushels of wheat fifteen Bushels of rye twenty Bushels of oats one hundred pounds of good sound pork fit for Bacon and One Bushel of Salt? The hay and second Crop of four acres of meadow ground which Lies next to the present dwelling House of the said Caspar to be kept in Good Order Mowed cured and hauled into the stable on the Premises at the proper costs and Charges of the said Abraham Keefer on quarter of an acre of hemp on good hemp Land and one quarter of an acre of Flax on good flax Land one full third Part of all that shall grow in the garden on the Premises yearly and Every and one full third part of all the apples that shall grow in the Orchard on the Premises yearly and Every year During the natural Lives of the said Caspar Keefer and Mary Agnus his Wife and in Case of the Death of the aforesaid Caspar Keefer or his Wife Maria Agnus then and in that Case the aforesaid Abraham Keefer Yielding and paying therefore and thereout on the first day of November yearly and Every year unto the Survivor of them the One full half of all that is herein before mention to be paid to both And Excepting and here reserving unto the aforesaid Casper Keefer and Maria Agnus his Wife and to the Survivor of them the stove Room and Kitchen.

195
On the Premises aforesaid Wherein there now Dwell sufficient Stable room for their Horses and Cattle and Pasture for them in in Summer where Abraham Keefer’s Cattle and horses Go and also the free use of the yard by the house and Egress and Regress to and from the said Dwelling house Garden and Stables and To and from the said hemp and flax the said Dwelling house and stables to be kept in good and Sufficient Tenantable Repair at the proper Costs and Charges of the aforesaid Abraham Keefer During the natural Life of the aforsaid. Casper Keefer and his wife Maria Agnes and During the natural Life of the survivor of them In Witness whereof the aforesaid Parties have to these presents Interchangeably set their hands and affixed their Seals the Day and year first above written Casper Keefer {seal} Sealed and Delivered in the presents of us Wm. Carrothers John Boyd. Received on the fourteenth Day of November 1763 of the within named Abraham Keefer the Sum of Ninety Pounds being the Consideration money within Mentioned Casper Keefer Witnesses present at Signing Wm. Carrothers John Boyd York County, PA. Be it remembered That on the 15th day of November 1763 Before me George Stevenson Esqr. one of his Majesties Justices of the Peace &c. for the County of York personally Came Casper Keefer in the forgoing Indenture named and acknowledged the same to be his Act and Deed and desired that the same may be entered of record Witness my hand and Seal. ____________
George Stevenson {seal}
A True Copy compared with the Origl. at York the 17th Nov. 1763
FP Geo Stevenson Recorder