You could write to the retired reverent HEUKAMP in Recke.He´s 84 ys old and very into research of loc al history.
Homeyers Hof 1a
Tel.: 00495453/74 24
I´m sure Mr. HEUKAMP will look up original records and manybe he knows other soures ( like tax lists or church propety list, when people rented land from the church for their animals ). Here your ancestors name and profession could appear.
It is very likely that these people are the same. In former times babies got two names.The first name is called : "Vorname "( pre-name ) . This name they had before their name was selected and the child baptisized. It was usually a name of a saint or Joseph or Maria. The second name was called : " Rufname " ( calling name ). The child got this name at baptizm and had been called by this name. The Americans call this name : middle name. But in America the middle name is not the name a person is called by lifelong.
1870/71 was the franco-prussian war in Germany. Maybe he decided to anglisize his name to assimilate among the Americans.
Nowadays the name TIMMERMANN doesn´t appear in the phone directory for Recke. So probably the original name was ZIMMERMANN ( = carpenter ). This name has 6 entries .
Good luck !