He had five children per an August 1908 letter of his brother Rev. Lemuel W. Haslup: George, Charley, William, Benjamin, and Margie.

CENSUS: 1850
Resis Haslup 50 Coach Smith
Patience Haslup 49
Lloyd J Haslup 22 coach Body Mf
Leroy F Haslup 20 Coach smith
Lemuel W Haslup 17 Carpenter
Patience P Haslup 15
Ruth E Haslup 13
Rezin C Haslup 9
John W Welsh 32 Coach Smith born VA
Chas Stewart 21 Ditto
Mary Hadder 23
1850; Census Place: Baltimore Ward 10, Baltimore, Maryland; Roll: M432_284; Page: 102A; Image: 420.

CENSUS: 1860
Rezin Haslup 62 coach smith born MD
Patience Haslup 60
Lloyd J Haslup 32 coachmaker
Margaret Haslup 24 born PA
Lloyd Haslup 3
Leroy Haslup 30 Coachsmith
Patience Haslup 25
Ruth E Haslup 22
Rezin C Haslup 20 Minister M.E.
Elizabeth Johnson 18
Rhoda Johnson 8
1860; Census Place: Baltimore Ward 10, Baltimore (Independent City), Maryland; Roll: M653_461; Page: 899; Image: 339; Family History Library Film: 803461.

CENSUS: 1870
Leon Haslup 35 (Leroy) born MD carriage marker
Sarah Haslup 25 born England
George Haslup 11/12 born July
Margaret Washington 14 born England.
1870; Census Place: Baltimore Ward 5, Baltimore (Independent City), Maryland; Roll: M593_573; Page: 227A; Image: 457; Family History Library Film: 552072.

CENSUS: 1880
Leroy Haslup 40 born MD
Sarah I. Haslup 30 born MD
George Haslup 11 born MD
Charles Haslup 6 born MD
William Haslup 2 born MD
1880; Census Place: Baltimore, Baltimore (Independent City), Maryland; Roll: 499; Family History Film: 1254499; Page: 576A; Enumeration District: 075; Image: 0913.

CENSUS: 1900
Leroy Haslup 65 born MD Feb 1835 m unk yrs born MD blacksmith
Sarah Haslup 45 born England parents born England
Chas L Haslup 26 born Dec 1873 married
Benj R Haslup 14 born Mar 1886
Marguret Haslup 9 born Nov 1890
Mary E Haslup 25 dau in law born Oct 1874
1900; Census Place: Baltimore Ward 9, Baltimore City (Independent City), Maryland; Roll: 611; Page: 2B; Enumeration District: 0118; FHL microfilm: 1240611.

OBIT: On. January 26, 1908, after a lingering illness, Leroy F., beloved husband of Sarah J. Haslup. The funeral will take place from his late residence No. 3055 East Hoffman street, on Sunday, January 26, at 2 PM Interment in Baltimore Cem.

TOMBSTONE: none on grave.