D. Junius Brutus Albinus, followed by Aulus Hirtius and L. Munatius Plancus.

Thomas H. Watkins has written:

'L. Munatius Plancus' -- subject(s): Biography, Consuls, Roman, History, Roman Consuls, Statesmen

It is not easy to reply to your question when you do not tell what temple of Saturn you mean. There were several of course. The most famous one is the one in the Forum Romanum, Rome. It is very old, probably from 498 BC, then reconstructed several times, most notably under Munatius Plancus, consul in 42 BC. Again restored after fires in 283 and about 400 AD.

Lyons (French spelling Lyon) is 2,050 years old today.
Lyons has been founded as a Roman colony in 43 BCE by Lucius Munatius Plancus ("Flatfoot"), a Roman Senator. Previous occupation has been discovered (continuous occupation since 400 BCE), some traces back to Neolithic ages.
In the year 27 BCE, Lyons becomes capital of the Gaulish territories under the name Lugdunum.
Lyons grows rapidly and is one of the largest towns of the Roman Empire during the first century (50 to 80,000 people). It is the birthplace of the Roman emperors Claude and Caracalla, of the Roman general Germanicus, and supposedly of the Prefect of the Roman province of Judea, Pontius Pilate.

It is not a harpy but a Crested Caracara (Caracara Plancus).