Two Austrian Names

[fiddlerslass]

Blasius

https://en.m.wiktionary.org/wiki/Blasius

[Zefiro]

The first letter is very similar to first letter of word after Ignatious in preceeeding column of second example looks like Doctor to me

I read this as Ignatius Polzer, vicarius

I've found a vicar with that name.
https://books.google.be/books?id=S2pCAAAAcAAJ&printsec=frontcover&source=gbs_atb&redir_esc=y#v=onepage&q=polzer&f=false

I hope Lensmeister can confirm the parish (or even better: provide a link to this register; I'd like to check for other names starting with this particular capital, although I still think it's a P)

[Lensmeister]

St. Margarethen ob Toellerberg, Kärnten, Austria

The first one was 1779 and the second 1780

[fiddlerslass]

Around that date I have found B and P to sometimes be interchangeable for example my Berger family are also written as Perger in parish records.

[Zefiro]

page with birth itself clearly shows Plasius; see on top Patrini (compare with B of Baptizans), in the middle Paulus and on the next page Peter, Phylippus,... The one writing down the births made a difference between his capital B & P.
https://data.matricula-online.eu/de/oesterreich/gurk/st-margarethen-ob-toellerberg-marjeta/S43_002-1/?pg=213

However,
index of the births clearly shows Blasius
https://data.matricula-online.eu/de/oesterreich/gurk/st-margarethen-ob-toellerberg-marjeta/S43_020-1/?pg=62

I know the name Blasius exists, and I'm sure the newborns were called Blasius. The scribe just had his own way of writing it with a P instead of a B.

So to answer your initial question: There's twice written Plasius, although it is fair to assume that Blasius was intended.

[Zefiro]

Around that date I have found B and P to sometimes be interchangeable for example my Berger family are also written as Perger in parish records.

Thank you for this useful observation. After all, the difference in pronunciation between B and P is not that big. Something to bear in mind when searching for variations of one particular name.