I was wondering about Lise's parents:

Iver Olsen Skjeggestad, born 31 Aug 1811 at Skjeggestad
Kari Simensdatter, born 3 Nov 1805 at Gabhoel, Gausdal

They were married 3 Jun 1841 in Gausdal. It was the first marriage for both. Iver was still living at Skjeggestadtuen at the time, Kari was living at a farm called Opsahl.

Marriage #15
Kildeinformasjon: Oppland fylke, Gausdal, Ministerialbok nr. 7 (1840-1850), Ekteviede 1841, side 207.
Permanent sidelenke: http://www.arkivverket.no/URN:kb_read?idx_kildeid=8939&i...

Since they were married in 1841 - and Lise was born in 1846, I would assume they may have had children before Lise.

I checked the church confirmation records - can't find any other children besides Lise.