Judy,
With regard to the entry that appears to say: STP: 1S 7 1/2D, that’s the priest doing his accounts. There was a fee charged for most baptisms, marriages & burials. That entry is in sterling, and means 1 shilling, 7 and a half pence. (There were 12 pence in a shilling, and 20 shillings in a £1). Today, with decimal currency, 1 shilling and 7 and a half pence would be about 8 pence sterling, which equates pretty closely to $US 8 cents.
You may notice that the fees vary. Priests often charged what they felt the family could afford (for someone very poor there is sometimes no fee). So where there are individual fees noted (not all parishes noted the fees) you can sometimes estimate your family’s general financial standing in the community by comparison with what others were being charged at the same time.
Less certain with the other entry but I suspect its the priest(s) names. Thady is short for Thaddeus. Hopefully someone else will confirm or correct.