I found a marriage record on familysearch that led me to this tree.

https://www.familysearch.org/search/recordDetails/show?uri=h...

Groom's Name: Simeon Henry Collins
Groom's Birth Date: 1845
Groom's Age: 25
Bride's Name: Mary Ann Lines
Bride's Birth Date: 1849
Bride's Birthplace:
Bride's Age: 21
Marriage Date: 18 Apr 1870
Marriage Place: Ivinghoe,Buckingham,England
Groom's Father's Name: Henry Collins
Bride's Father's Name: Richard Lines
Indexing Project (Batch) Number: M13008-3
System Origin: England-ODM
Source Film Number: 1042387

They were my great grandfather's parents (assuming this is correct).

This man's tree was one of my suggested connections. The family (the family that is verified) eventually moved to Massachusetts. Henry Collins worked in chemicals. He was also a police constable while he was still in England.