Engel Augusta, rather rare name.
Like two earlier children Eva and Pehr her birth is recorded in neighboring parish Puolanka, the date is 11 April.
List from HisKi:
30.12.1844 26.1.1845 Väyrylä Bd. Jöran Lejnonen Anna Mustonen Eva
10.6.1847 23.6.1847 Väyrylä 9 Bd. Jöran Lejnonen Anna Mustonen Pehr
11.4.1849 26.4.1849 Wäyrylä No:9 Bd. Jöran Lejnonen Anna Mustonen Engel Augusta
Cannot find Matts 1839 in HisKi, but others are born in Paltamo:
12.11.1840 23.12.1840 Ura No 2 Jöran Leinonen Anna Mustonen 27 Caisa Lisa
10.12.1842 5.1.1843 Ura No 2 Jöran Leinonen Anna Mustonen 28 Sara Gustafva
4.3.1852 17.3.1852 Melalax No 23 Jöran Leinonen Anna Mustonen 38 Eva Lovisa
17.6.1854 20.6.1854 Melalax No 23 Jöran Leinonen Anna Mustonen 39 Johan

Jaska