Robert’s surname and the children’s is based on the name given for the Land records. I found that in Meigs county is was mostly spelled Esdale.
ESDELL use Isdell, ESDALE/ESDOLL/ESDELL Also see ISDELL/ISDALE
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Could the place of birth: SL stand for Scotland?
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1840 Census of Olive Twp., Meigs Co., OH, taken July 26th 1840. - Page 027
Robert Erdale: 1010001000000 | 211001000000 | the rest are zeros
1 male under 5 -------- Benjamin
1 male 5 - 10 -------- William
1 male 40 - 50 -------- Robert Esdale [abt 46]
2 female under 5 ------ Margaret and another female
1 female 5 - 10 ------- Rebecca
1 female 10 - 15 ------ Rosanna [----> married Wm. Jackson Ollom, 2 years later ]
1 female 30 - 40 ------ Jane Esdale [abt 38]
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Died the year preceding the 1850 ESDALE ROBERT*MEIGS CO. OH 56 M Month =DEC Place of Birth: SL Cause of Death: PURPAL FVR Occupation: FARMER Mortality index

See wife Jane’s notes for anything/ after 1849. ie., the 1850 census.
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Ohio Land Records:
11 does appear to be Meigs.

ROBERT EASDALE MARIETTA Doc # 4486 dt. 1839/05/01 base line OHIO RIVER SURVEY 4 N, 11W, 26 - 80 acres
ROBERT EASDALE MARIETTA 4545 1839/09/20 OHIO RIVER SURVEY 4 N, 11 W, 26 - 40 acres
ROBERT EASDALE MARIETTA 4549 1839/09/20 OHIO RIVER SURVEY 4 N, 11 W, 26 - 80 acres
ROBERT EASDALE MARIETTA 5039 1839/09/20 OHIO RIVER SURVEY 4 N, 11 W, 26 - 40 acres