Is the Horace W. Pitcher you are looking for the one from Maine b. c. 1836, married to Lucy Copeland Wentworth (1863) and has a son Elbridge Simmonds Pitcher b. 1865 in S. Waldoboro, ME who married Emma B. Pitcher?
If so I have the line back to Andrew in Milton, MA and would be willing to compare and exchange info with you.