The gravestone shown appears show death date of his first wife Rachel Jones on one side,and that of his second wife Hannah on another which can be confusing. All documents say he died June 3, 1828. The transcription says:

Eld. John Lamb died June 4, 1828 ae 52 years, Rachel J. wife of Eld John Lamb died Feb. 3 1819 ae 37 years 5 mos, Hannah Payson widow of Eld John Lamb died Oct. 17 1871 ae 81 yrs 7 mos 5 ds. Mercy B. dau. of Eld John and Rachel Lamb died Apr. 8 1866 ae 59 yr 9 mos. , Rachel dau. of Eld. John and Hannah Lamb died Oct 17, 1828 ae 2 yrs 3 mos; Martin B Lamb died Mar 8 1888 ae 62 yrs 1 mo 23 ds
LAMB

Right side:Lydia J. McKinney dau of Eld John Lamb died Oct 19 1881 ae 71 6 mos
Back, left side Rebecca Knight 1808-1891 Franklin W. Collemer 1834-1917 Susie K Collemer 1850 1930
Perhaps the first picture shows and earlier marker than the second.
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John married Rachel Jones; Children were:
1)Polly (Mary) Lamb was born on 20 Feb 1803 and died on 17 Feb 1869 in Montville, ME. Polly married Joseph C. Bean on 21 Sep 1827.
2)Mercy Brooks Lamb was born on 4 Jul 1805, died on 8 Apr 1866.
3) Rebeckah Lamb was born on 15 Jun 1807 in Lincolnville, died in 1891, and was buried in Lower Cemetery, Lincolnville. Rebeckah married Abner Knight on 9 Nov 1848.
4) Lydia Hannah Lamb was born on 1 Dec 1809, died on 19 Oct 1881 in Lincolnville. Lydia married Thomas McKinney.
5) Nancey Brooks Lamb was born on 13 Mar 1812 in Lincolnville, and married Wm. O. Fuller as his second wife.
6) John Buscoll Lamb was born on 25 Dec 1814, died on 16 Apr 1896 in Montville, Waldo, ME, and was buried in Vose Cemetery, Waldo Co. John married Rosanna Plummer.
7)Jane D. Lamb was born on 16 Jan 1818 and died on 2 Jun 1852 in Appleton, , ME. Married Wm. O Fuller as his first wife, her sister Nancy was his 2nd wife.

John next married Hannah H. Payson, daughter of Ephraim Payson and Hannah Payson, about 9 Jan 1820 in Lincolnville. Hannah was born on 12 May 1789 in Friendship,ME and died on 17 Oct 1871 in Lincolnville.
8) Henry A. Lamb was born on 2 Feb 1821 in Lincolnville, and died on 23 Jun 1892. He was a doctor in Portland, ME
9) Colby Lamb was born on 12 Mar 1822 in Lincolnville, and died in 1915. He was a doctor in Salem, MA. Colby married Rebecca Bean on 15 Jan 1860.
10)Rachel Jones Lamb was born on 5 Jun 1823 in Lincolnville, died on 27 Oct 1826. She never married.
11) Martin Brooks Lamb was born on 15 Jan 1826, died on 8 Mar 1888 in Newburyport, Essex, MA, and was buried in Lower Cemetery, Lincolnville.
12)Joseph Bean Lamb was born on 15 Apr 1827 in Lincolnville, and died in 1888 in Labette Co, KS.
Joseph graduated from the New York College of Physicians and Surgeons. He was the major surgeon of the 35th Missouri Regiment in the Civil War. He was a physician in Parsons, KA in 1885.