This information is from Lilian Ihrman that her family has learned.(one ancestor is Bertil Ihrman)
Anders Christian Johansson, was a parish clerk in Ihrsta parish in Vastmanland, Sweden from the year 1652. He & his son took the name Ihrman after the parish.
Andres married 1652 Brita Andersdotter.
Children;
Johannes b. 1652-?. Sent to Stockholm. Married to Anna.
Anders b. 1659. in Koping
Christian b. 1659, d 1704 in Koping.
Does anyone have the same or additional information?