Jakob Sidler was born 3 September 1671 to Hans Rudolf Sidler and Margaretha Grob. He died 1 January 1672. He lived 3 months 29 days. In his death record the profession of his father Jakob Sidler was noted as Wagner.
This common occupational surname was often given to one who transported produce or other goods via high-sided wagons or carts. Among some German populations, especially the Pennsylvania Germans, Wagner also denoted a wagon-maker, wainwright, or cartwright. (Wikipedia)
Average life expectancy at birth for English people in the late 16th and early 17th centuries was just under 40 – 39.7 years. However, this low figure was mostly due to the high rate of infant and child mortality; over 12% of all children born would die in their first year. With the hazards of infancy behind them, the death rate for children slowed but continued to occur. A cumulative total of 36% of children died before the age of six, and another 24% between the ages of seven and sixteen. In all, of 100 live births, 60 would die before the age of 16. A man or woman who reached the age of 30 could expect to live to 59. [Thomson Gale, 'Infant Mortality' (1998)]
Food shortages and insecurity were leading concerns in the 18th century, especially in Europe, and these were exacerbated by reduced harvests yields. Disease was another leading cause of death, with rats and fleas being the common carriers of disease, specifically plagues, during this era. (Wikipedia)
Common diseases were dysentery, malaria, diphtheria, flu, typhoid, smallpox and leprosy. (Wikipedia)
Death seen as natural
If a woman died after the birth of a child (this was a dangerous process because of infections), her younger sister stepped in as new wife, or replacement. The husband (here farmer in the country) absolutely needed a wife to look after the children and farm house (cooking etc.). So he normally got remarried a second, or third time within a few months; later a one year period was recommended. Often these wives were widows themselves. So there was constant giving births and dying on the farms, similar to what happened in the stable with the animals. Death was seen as natural. Only medicine and hygienic measures lowered the infant and childhood mortality rate. However, there were very bad pestulenza waves in the 17th century in our regions. Many villages lost 30 to 40% of the population. (Peter Bertschinger)
We often see that from the age 20 years on, when marriage was allowed by the church, the parents had at least one child every year, often stillborn. The rule for naming was that the godparents gave their first name to the child. For example if a child named Jakob died, they continued the name until one survived the first years. From this Julius Billeter, Swiss genealogists, concluded that a child died young and noted a "dy" by their name. On average these big farmer families had about two boys and two girls that made it to adulthood and most of them got married. (Peter Bertschinger, FamilySearch)